Headings with numbers makes the TOC on the right panel fail to expand.

[sirlis]

Checklist

• [x] I have read the tutorials and know the correct effect of the functional design.
• [x] There are no similar reports on existing issues (including closed ones).
• [x] I found the bug on the latest code of the master branch.

Describe the bug

Adding numbers to each level of headings makes the TOC on the right fail to expand.

To Reproduce

Steps to reproduce the behavior:

1. new a markdown file 111.md and write contents with headings like:

   ## 1. A
   
   contents ....
   
   ## 2. B
   
   contents ....
   
   ### 2.1. BB
   
   contents ....
   
   ### 2.2. BBB
   
   contents ....
   
   ## 3. C

2. See error

The automatically generated TOC on the right panel won't expand to the 2nd level correctly.

Expected behavior

The TOC expanded as expected.

Screenshots

examples link: http://sirlis.cn/posts/reinforcement-learning-Monte-Carlo/

In fact, almost all posts of the blog cannot experience a auto-expanded TOC.

Environment

Command	Version
chrispy	latest

Desktop

• OS: windows 11
• Browser: Edge latest version

Smartphone

Additional context

[github-actions[bot]]

:wave: Hi @sirlis,

This issue is being automatically closed because it does not follow the issue template. Please DO NOT open another similar issue, try to edit the current issue according to the template, then it will be reopened automatically.

[NichtsHsu]

See #572 and https://github.com/afeld/bootstrap-toc/issues/64

[sirlis]

See #572 and afeld/bootstrap-toc#64

Thank you.

[sirlis]

Since bootstrap-toc is no longer maintained, I wonder if it is possible for the developer to update Chrispy by using Tocbot.